package com.yuqq.token.util;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.parser.ParserConfig;
import com.alibaba.fastjson.serializer.SerializerFeature;
import com.fasterxml.jackson.databind.JavaType;
import com.fasterxml.jackson.databind.type.TypeFactory;
import org.springframework.data.redis.serializer.RedisSerializer;
import org.springframework.data.redis.serializer.SerializationException;

import java.nio.charset.Charset;


public class FastJsonRedisSerializer<T> implements RedisSerializer<T>
    {


        public static final Charset DEFAULT_CHARSET = Charset.forName("UTF-8");


        private Class<T> clazz;


        static
        {
            ParserConfig.getGlobalInstance().setAutoTypeSupport(true);
        }

        public FastJsonRedisSerializer(Class<T> clazz)
        {
            super(); this.clazz = clazz;
        }

        @Override
        public byte[] serialize(T t) throws SerializationException
        {
            if (t == null)
            {
                return new byte[0];
            }
            return JSON.toJSONString(t, SerializerFeature.WriteClassName).getBytes(DEFAULT_CHARSET);
        }


        @Override
        public T deserialize(byte[] bytes) throws SerializationException
        {
            if (bytes == null || bytes.length <= 0)
            {
                return null;
            }
            String str = new String(bytes, DEFAULT_CHARSET);

            return JSON.parseObject(str, clazz);
        }



        protected JavaType getJavaType(Class<?> clazz)
        {
            return TypeFactory.defaultInstance().constructType(clazz);
        }
    }




